This movie was originally made for the adventure game "Crystal Skull" using the 3D models of the architecture seen elsewhere in this feature.

The puzzle involved memorizing the numbers of a Long Count date in the Caracol and using them here to cause the famous solstice lighting-effect on the ballustrades of El Castillo. Your success invokes the name of K'uk'ulkan, the legendary king from the west who conquered Yucatan.

A non-multimedia version of this puzzle is available online, but to get to it you'll have to make your way out of Tenochtitlan and travel back in time at Tula.